./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array3_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array3_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:57:07,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:57:07,292 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 14:57:07,297 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:57:07,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:57:07,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:57:07,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:57:07,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:57:07,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:57:07,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:57:07,324 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:57:07,325 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:57:07,325 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:57:07,326 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:57:07,326 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:57:07,327 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:57:07,327 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:57:07,328 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:57:07,328 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:57:07,329 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:57:07,330 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:57:07,330 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:57:07,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:57:07,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:57:07,332 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:57:07,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:57:07,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:57:07,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:57:07,334 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:57:07,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:57:07,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:57:07,336 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:57:07,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:57:07,336 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:57:07,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:57:07,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:57:07,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:57:07,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:57:07,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:57:07,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:57:07,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:57:07,338 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:57:07,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:57:07,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:57:07,339 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:57:07,339 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:57:07,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:57:07,340 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 [2023-12-02 14:57:07,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:57:07,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:57:07,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:57:07,562 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:57:07,562 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:57:07,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/array-patterns/array3_pattern.c [2023-12-02 14:57:10,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:57:10,487 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:57:10,487 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/sv-benchmarks/c/array-patterns/array3_pattern.c [2023-12-02 14:57:10,493 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/data/2dbe50af8/6f50146003c74fbc86aee7eab3040901/FLAGf41ad0a6a [2023-12-02 14:57:10,506 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/data/2dbe50af8/6f50146003c74fbc86aee7eab3040901 [2023-12-02 14:57:10,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:57:10,509 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:57:10,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:57:10,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:57:10,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:57:10,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67358013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10, skipping insertion in model container [2023-12-02 14:57:10,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,538 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:57:10,663 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2023-12-02 14:57:10,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:57:10,690 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:57:10,703 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2023-12-02 14:57:10,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:57:10,730 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:57:10,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10 WrapperNode [2023-12-02 14:57:10,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:57:10,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:57:10,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:57:10,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:57:10,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,771 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-12-02 14:57:10,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:57:10,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:57:10,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:57:10,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:57:10,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,799 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:57:10,800 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:57:10,800 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:57:10,800 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:57:10,801 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (1/1) ... [2023-12-02 14:57:10,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:57:10,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:57:10,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:57:10,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:57:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:57:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 14:57:10,857 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 14:57:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:57:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:57:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:57:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure square [2023-12-02 14:57:10,858 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2023-12-02 14:57:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:57:10,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:57:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:57:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:57:10,930 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:57:10,932 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:57:11,100 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:57:11,135 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:57:11,135 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 14:57:11,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:57:11 BoogieIcfgContainer [2023-12-02 14:57:11,137 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:57:11,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:57:11,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:57:11,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:57:11,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:57:10" (1/3) ... [2023-12-02 14:57:11,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1012fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:57:11, skipping insertion in model container [2023-12-02 14:57:11,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:57:10" (2/3) ... [2023-12-02 14:57:11,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1012fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:57:11, skipping insertion in model container [2023-12-02 14:57:11,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:57:11" (3/3) ... [2023-12-02 14:57:11,147 INFO L112 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2023-12-02 14:57:11,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:57:11,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:57:11,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:57:11,237 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49014cea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:57:11,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:57:11,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:57:11,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 14:57:11,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:11,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:11,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:57:11,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash 869276410, now seen corresponding path program 1 times [2023-12-02 14:57:11,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:57:11,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941715438] [2023-12-02 14:57:11,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:11,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:57:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:57:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:57:11,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:57:11,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941715438] [2023-12-02 14:57:11,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941715438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:57:11,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:57:11,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:57:11,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002539998] [2023-12-02 14:57:11,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:57:11,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 14:57:11,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:57:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 14:57:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 14:57:11,441 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:57:11,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:57:11,475 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2023-12-02 14:57:11,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 14:57:11,482 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 14:57:11,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:57:11,489 INFO L225 Difference]: With dead ends: 36 [2023-12-02 14:57:11,489 INFO L226 Difference]: Without dead ends: 21 [2023-12-02 14:57:11,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 14:57:11,496 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:57:11,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:57:11,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-02 14:57:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-02 14:57:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:57:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-02 14:57:11,530 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2023-12-02 14:57:11,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:57:11,532 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-02 14:57:11,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:57:11,532 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-02 14:57:11,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 14:57:11,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:11,534 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:11,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:57:11,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:57:11,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:11,535 INFO L85 PathProgramCache]: Analyzing trace with hash 583031080, now seen corresponding path program 1 times [2023-12-02 14:57:11,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:57:11,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196302857] [2023-12-02 14:57:11,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:11,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:57:11,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:57:11,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722242865] [2023-12-02 14:57:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:11,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:57:11,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:57:11,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:57:11,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:57:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:57:11,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 14:57:11,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:57:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:57:11,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:57:11,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:57:11,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196302857] [2023-12-02 14:57:11,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:57:11,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722242865] [2023-12-02 14:57:11,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722242865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:57:11,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:57:11,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:57:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583672670] [2023-12-02 14:57:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:57:11,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:57:11,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:57:11,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:57:11,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:57:11,749 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:57:11,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:57:11,795 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2023-12-02 14:57:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:57:11,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-12-02 14:57:11,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:57:11,796 INFO L225 Difference]: With dead ends: 27 [2023-12-02 14:57:11,796 INFO L226 Difference]: Without dead ends: 24 [2023-12-02 14:57:11,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:57:11,798 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:57:11,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 43 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:57:11,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-02 14:57:11,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2023-12-02 14:57:11,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:57:11,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-12-02 14:57:11,806 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2023-12-02 14:57:11,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:57:11,807 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-12-02 14:57:11,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:57:11,807 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-12-02 14:57:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 14:57:11,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:11,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:11,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:57:12,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:57:12,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:57:12,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash -734185303, now seen corresponding path program 1 times [2023-12-02 14:57:12,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:57:12,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155421404] [2023-12-02 14:57:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:12,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:57:12,039 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:57:12,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146940134] [2023-12-02 14:57:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:12,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:57:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:57:12,041 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:57:12,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:57:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:57:12,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:57:12,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:57:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:57:12,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:57:12,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:57:12,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155421404] [2023-12-02 14:57:12,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:57:12,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146940134] [2023-12-02 14:57:12,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146940134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:57:12,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:57:12,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:57:12,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755161116] [2023-12-02 14:57:12,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:57:12,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:57:12,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:57:12,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:57:12,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:57:12,165 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:57:12,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:57:12,245 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-12-02 14:57:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:57:12,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2023-12-02 14:57:12,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:57:12,246 INFO L225 Difference]: With dead ends: 45 [2023-12-02 14:57:12,247 INFO L226 Difference]: Without dead ends: 27 [2023-12-02 14:57:12,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:57:12,248 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:57:12,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 47 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:57:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-02 14:57:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2023-12-02 14:57:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:57:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-02 14:57:12,255 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 25 [2023-12-02 14:57:12,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:57:12,256 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-02 14:57:12,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:57:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-02 14:57:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 14:57:12,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:12,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:12,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 14:57:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:57:12,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:57:12,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1150030784, now seen corresponding path program 1 times [2023-12-02 14:57:12,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:57:12,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326078595] [2023-12-02 14:57:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:12,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:57:12,486 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:57:12,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55366657] [2023-12-02 14:57:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:12,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:57:12,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:57:12,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:57:12,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 14:57:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:57:12,611 WARN L260 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-02 14:57:12,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:57:12,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 14:57:12,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-02 14:57:13,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:57:13,314 INFO L349 Elim1Store]: treesize reduction 100, result has 13.0 percent of original size [2023-12-02 14:57:13,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 41 [2023-12-02 14:57:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:57:14,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:57:33,221 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse14 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (let ((.cse8 (* .cse14 4)) (.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (and (forall ((v_z_4 Int)) (let ((.cse0 (+ .cse14 v_z_4))) (or (< 6442450943 .cse0) (< .cse0 4294967296) (forall ((v_y_4 Int)) (let ((.cse12 (* v_y_4 4294967296)) (.cse13 (* 4294967295 v_z_4))) (let ((.cse11 (+ .cse12 .cse13))) (or (let ((.cse7 (* |c_ULTIMATE.start_main_~num~0#1| .cse11))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse10 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_4) (* 17179869184 v_y_4)))) (store .cse9 .cse10 (+ (* .cse7 |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse10))))))) (let ((.cse3 (let ((.cse5 (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse6 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| (* v_z_4 4) .cse8))) (store .cse5 .cse6 (+ .cse7 (select .cse5 .cse6)))))) (= (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse3) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse1 .cse1))) (+ (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse4 .cse4)) |c_ULTIMATE.start_main_~sum2~0#1|))))) (< .cse11 0) (< c_~ARR_SIZE~0 (+ .cse12 .cse13 1)))))) (< 4294967295 v_z_4)))) (forall ((v_z_2 Int)) (or (< 4294967295 v_z_2) (forall ((v_y_2 Int)) (let ((.cse15 (* v_y_2 4294967296)) (.cse16 (* 4294967295 v_z_2))) (let ((.cse17 (+ .cse15 .cse16))) (or (< c_~ARR_SIZE~0 (+ .cse15 .cse16 1)) (< .cse17 0) (let ((.cse24 (* .cse17 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse25 (+ (* 17179869180 v_z_2) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_2)))) (store .cse9 .cse25 (+ (* .cse24 |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse25))))))) (let ((.cse20 (let ((.cse22 (select .cse19 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse23 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| (* v_z_2 4) .cse8 (- 34359738368)))) (store .cse22 .cse23 (+ .cse24 (select .cse22 .cse23)))))) (= (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse20) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse18 .cse18))) (+ (let ((.cse21 (select .cse20 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse21 .cse21)) |c_ULTIMATE.start_main_~sum2~0#1|))))))))) (< (+ .cse14 v_z_2) 6442450944))) (forall ((v_z_4 Int)) (or (< 2147483647 (+ .cse14 v_z_4)) (< v_z_4 0) (forall ((v_y_4 Int)) (let ((.cse35 (* v_y_4 4294967296)) (.cse36 (* 4294967295 v_z_4))) (let ((.cse34 (+ .cse35 .cse36))) (let ((.cse32 (* |c_ULTIMATE.start_main_~num~0#1| .cse34))) (let ((.cse27 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse41 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_4) (* 17179869184 v_y_4)))) (store .cse9 .cse41 (+ (* .cse32 |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse41))))))) (let ((.cse30 (select .cse27 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse33 (* v_z_4 4))) (or (let ((.cse28 (let ((.cse31 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse33 .cse8))) (store .cse30 .cse31 (+ .cse32 (select .cse30 .cse31)))))) (= (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse26 (select (select (store .cse27 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse28) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse26 .cse26))) (+ (let ((.cse29 (select .cse28 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse29 .cse29)) |c_ULTIMATE.start_main_~sum2~0#1|))) (< .cse34 0) (< c_~ARR_SIZE~0 (+ .cse35 .cse36 1)) (let ((.cse38 (let ((.cse40 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse33 .cse8))) (store .cse30 .cse40 (+ (select .cse30 .cse40) .cse32))))) (= (+ |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse37 (select .cse38 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse37 .cse37))) (+ (let ((.cse39 (select (select (store .cse27 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse38) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse39 .cse39)) |c_ULTIMATE.start_main_~sum1~0#1|)))))))))))) (forall ((v_z_2 Int)) (or (< 4294967295 v_z_2) (forall ((v_y_2 Int)) (let ((.cse42 (* v_y_2 4294967296)) (.cse43 (* 4294967295 v_z_2))) (let ((.cse44 (+ .cse42 .cse43))) (let ((.cse51 (* .cse44 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse48 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse57 (+ (* 17179869180 v_z_2) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_2)))) (store .cse9 .cse57 (+ (* .cse51 |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse57))))))) (let ((.cse49 (select .cse48 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse52 (* v_z_2 4))) (or (< c_~ARR_SIZE~0 (+ .cse42 .cse43 1)) (< .cse44 0) (let ((.cse46 (let ((.cse50 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse52 .cse8))) (store .cse49 .cse50 (+ (select .cse49 .cse50) .cse51))))) (= (+ |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse45 (select .cse46 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse45 .cse45))) (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse47 (select (select (store .cse48 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse46) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse47 .cse47))))) (let ((.cse54 (let ((.cse56 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse52 .cse8 (- 34359738368)))) (store .cse49 .cse56 (+ .cse51 (select .cse49 .cse56)))))) (= (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse53 (select (select (store .cse48 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse54) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse53 .cse53))) (+ (let ((.cse55 (select .cse54 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse55 .cse55)) |c_ULTIMATE.start_main_~sum2~0#1|)))))))))) (< (+ .cse14 v_z_2) 6442450944))) (forall ((v_z_2 Int)) (let ((.cse69 (+ .cse14 v_z_2))) (or (forall ((v_y_2 Int)) (let ((.cse58 (* v_y_2 4294967296)) (.cse59 (* 4294967295 v_z_2))) (let ((.cse60 (+ .cse58 .cse59))) (or (< c_~ARR_SIZE~0 (+ .cse58 .cse59 1)) (< .cse60 0) (let ((.cse67 (* .cse60 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse64 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse68 (+ (* 17179869180 v_z_2) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_2)))) (store .cse9 .cse68 (+ (* .cse67 |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse68))))))) (let ((.cse62 (let ((.cse65 (select .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse66 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| (* v_z_2 4) .cse8))) (store .cse65 .cse66 (+ (select .cse65 .cse66) .cse67))))) (= (+ |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse61 (select .cse62 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse61 .cse61))) (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse63 (select (select (store .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse62) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse63 .cse63))))))))))) (< .cse69 2147483648) (< v_z_2 0) (< 4294967295 .cse69)))) (forall ((v_z_2 Int)) (let ((.cse86 (+ .cse14 v_z_2))) (or (forall ((v_y_2 Int)) (let ((.cse70 (* v_y_2 4294967296)) (.cse71 (* 4294967295 v_z_2))) (let ((.cse72 (+ .cse70 .cse71))) (let ((.cse79 (* .cse72 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse76 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse85 (+ (* 17179869180 v_z_2) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869184 v_y_2)))) (store .cse9 .cse85 (+ (* .cse79 |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse85))))))) (let ((.cse77 (select .cse76 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse80 (* v_z_2 4))) (or (< c_~ARR_SIZE~0 (+ .cse70 .cse71 1)) (< .cse72 0) (let ((.cse74 (let ((.cse78 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse80 .cse8))) (store .cse77 .cse78 (+ (select .cse77 .cse78) .cse79))))) (= (+ |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse73 (select .cse74 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse73 .cse73))) (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse75 (select (select (store .cse76 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse74) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse75 .cse75))))) (let ((.cse82 (let ((.cse84 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse80 .cse8 (- 34359738368)))) (store .cse77 .cse84 (+ .cse79 (select .cse77 .cse84)))))) (= (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse81 (select (select (store .cse76 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse82) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse81 .cse81))) (+ (let ((.cse83 (select .cse82 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse83 .cse83)) |c_ULTIMATE.start_main_~sum2~0#1|)))))))))) (< .cse86 2147483648) (< v_z_2 0) (< 4294967295 .cse86)))) (forall ((v_z_4 Int)) (or (< 2147483647 (+ .cse14 v_z_4)) (< v_z_4 0) (forall ((v_y_4 Int)) (let ((.cse88 (* v_y_4 4294967296)) (.cse89 (* 4294967295 v_z_4))) (let ((.cse87 (+ .cse88 .cse89))) (or (< .cse87 0) (< c_~ARR_SIZE~0 (+ .cse88 .cse89 1)) (let ((.cse96 (* |c_ULTIMATE.start_main_~num~0#1| .cse87))) (let ((.cse93 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse97 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_4) (* 17179869184 v_y_4)))) (store .cse9 .cse97 (+ (* .cse96 |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse97))))))) (let ((.cse91 (let ((.cse94 (select .cse93 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse95 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| (* v_z_4 4) .cse8))) (store .cse94 .cse95 (+ (select .cse94 .cse95) .cse96))))) (= (+ |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse90 (select .cse91 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse90 .cse90))) (+ (let ((.cse92 (select (select (store .cse93 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse91) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse92 .cse92)) |c_ULTIMATE.start_main_~sum1~0#1|))))))))))) (forall ((v_z_4 Int)) (let ((.cse98 (+ .cse14 v_z_4))) (or (< 6442450943 .cse98) (< .cse98 4294967296) (< 4294967295 v_z_4) (forall ((v_y_4 Int)) (let ((.cse108 (* v_y_4 4294967296)) (.cse109 (* 4294967295 v_z_4))) (let ((.cse107 (+ .cse108 .cse109))) (let ((.cse105 (* |c_ULTIMATE.start_main_~num~0#1| .cse107))) (let ((.cse100 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse114 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_4) (* 17179869184 v_y_4)))) (store .cse9 .cse114 (+ (* .cse105 |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse114))))))) (let ((.cse103 (select .cse100 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse106 (* v_z_4 4))) (or (let ((.cse101 (let ((.cse104 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse106 .cse8))) (store .cse103 .cse104 (+ .cse105 (select .cse103 .cse104)))))) (= (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse99 (select (select (store .cse100 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse101) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse99 .cse99))) (+ (let ((.cse102 (select .cse101 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse102 .cse102)) |c_ULTIMATE.start_main_~sum2~0#1|))) (< .cse107 0) (< c_~ARR_SIZE~0 (+ .cse108 .cse109 1)) (let ((.cse111 (let ((.cse113 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse106 .cse8))) (store .cse103 .cse113 (+ (select .cse103 .cse113) .cse105))))) (= (+ |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse110 (select .cse111 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse110 .cse110))) (+ (let ((.cse112 (select (select (store .cse100 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse111) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse112 .cse112)) |c_ULTIMATE.start_main_~sum1~0#1|)))))))))))))))) is different from true [2023-12-02 14:57:33,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:57:33,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326078595] [2023-12-02 14:57:33,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:57:33,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55366657] [2023-12-02 14:57:33,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55366657] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:57:33,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [380019718] [2023-12-02 14:57:33,248 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 14:57:33,248 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:57:33,252 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:57:33,257 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:57:33,257 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:57:34,256 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-12-02 14:57:34,257 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 53 for LOIs [2023-12-02 14:57:34,285 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:57:37,015 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '563#(and (not (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32766) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~index~0#1|) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0))' at error location [2023-12-02 14:57:37,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:57:37,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:57:37,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-12-02 14:57:37,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777573867] [2023-12-02 14:57:37,016 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:57:37,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 14:57:37,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:57:37,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 14:57:37,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1862, Unknown=4, NotChecked=88, Total=2162 [2023-12-02 14:57:37,019 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:57:38,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:57:38,896 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2023-12-02 14:57:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 14:57:38,896 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2023-12-02 14:57:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:57:38,898 INFO L225 Difference]: With dead ends: 62 [2023-12-02 14:57:38,898 INFO L226 Difference]: Without dead ends: 59 [2023-12-02 14:57:38,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=446, Invalid=3214, Unknown=4, NotChecked=118, Total=3782 [2023-12-02 14:57:38,902 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 82 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:57:38,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 130 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:57:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-02 14:57:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2023-12-02 14:57:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 14:57:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2023-12-02 14:57:38,920 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 26 [2023-12-02 14:57:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:57:38,920 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2023-12-02 14:57:38,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:57:38,921 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2023-12-02 14:57:38,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 14:57:38,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:38,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:38,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 14:57:39,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:57:39,123 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:57:39,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:39,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1156338807, now seen corresponding path program 2 times [2023-12-02 14:57:39,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:57:39,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83144735] [2023-12-02 14:57:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:39,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:57:39,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:57:39,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69099045] [2023-12-02 14:57:39,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:57:39,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:57:39,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:57:39,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:57:39,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:57:39,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 14:57:39,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:57:39,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:57:39,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:57:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:57:39,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:57:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:57:39,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:57:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83144735] [2023-12-02 14:57:39,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:57:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69099045] [2023-12-02 14:57:39,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69099045] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:57:39,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1029917945] [2023-12-02 14:57:39,378 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 14:57:39,379 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:57:39,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:57:39,379 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:57:39,379 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:57:40,226 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-12-02 14:57:40,227 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 8 for LOIs [2023-12-02 14:57:40,229 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:57:44,844 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '936#(and (not (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32766) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~index~0#1|) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0))' at error location [2023-12-02 14:57:44,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:57:44,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:57:44,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-02 14:57:44,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68133130] [2023-12-02 14:57:44,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:57:44,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 14:57:44,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:57:44,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 14:57:44,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=535, Unknown=2, NotChecked=0, Total=650 [2023-12-02 14:57:44,846 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 14:57:45,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:57:45,070 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2023-12-02 14:57:45,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 14:57:45,070 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 27 [2023-12-02 14:57:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:57:45,071 INFO L225 Difference]: With dead ends: 60 [2023-12-02 14:57:45,071 INFO L226 Difference]: Without dead ends: 57 [2023-12-02 14:57:45,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=149, Invalid=779, Unknown=2, NotChecked=0, Total=930 [2023-12-02 14:57:45,073 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 31 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:57:45,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 53 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:57:45,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-02 14:57:45,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2023-12-02 14:57:45,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 14:57:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2023-12-02 14:57:45,088 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 27 [2023-12-02 14:57:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:57:45,089 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2023-12-02 14:57:45,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 14:57:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2023-12-02 14:57:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 14:57:45,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:45,091 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:45,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 14:57:45,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:57:45,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:57:45,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:45,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1740742801, now seen corresponding path program 3 times [2023-12-02 14:57:45,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:57:45,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649916384] [2023-12-02 14:57:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:45,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:57:45,310 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:57:45,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014720548] [2023-12-02 14:57:45,311 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 14:57:45,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:57:45,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:57:45,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:57:45,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:57:45,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 14:57:45,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:57:45,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:57:45,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:57:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:57:45,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:57:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 14:57:45,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:57:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649916384] [2023-12-02 14:57:45,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:57:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014720548] [2023-12-02 14:57:45,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014720548] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:57:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1471168243] [2023-12-02 14:57:45,564 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 14:57:45,565 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:57:45,565 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:57:45,565 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:57:45,565 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:57:46,460 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-12-02 14:57:46,462 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 8 for LOIs [2023-12-02 14:57:46,464 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:57:48,317 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1347#(and (not (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32766) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~index~0#1|) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0))' at error location [2023-12-02 14:57:48,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:57:48,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:57:48,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-02 14:57:48,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213553726] [2023-12-02 14:57:48,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:57:48,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 14:57:48,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:57:48,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 14:57:48,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=547, Unknown=6, NotChecked=0, Total=650 [2023-12-02 14:57:48,320 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 14:57:48,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:57:48,534 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2023-12-02 14:57:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 14:57:48,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 35 [2023-12-02 14:57:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:57:48,535 INFO L225 Difference]: With dead ends: 60 [2023-12-02 14:57:48,535 INFO L226 Difference]: Without dead ends: 35 [2023-12-02 14:57:48,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=119, Invalid=687, Unknown=6, NotChecked=0, Total=812 [2023-12-02 14:57:48,536 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:57:48,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 52 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:57:48,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-02 14:57:48,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2023-12-02 14:57:48,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 14:57:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-12-02 14:57:48,543 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 35 [2023-12-02 14:57:48,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:57:48,543 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-12-02 14:57:48,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 14:57:48,543 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-12-02 14:57:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 14:57:48,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:48,545 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:48,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 14:57:48,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:57:48,745 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:57:48,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:48,746 INFO L85 PathProgramCache]: Analyzing trace with hash -10878104, now seen corresponding path program 4 times [2023-12-02 14:57:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:57:48,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874959517] [2023-12-02 14:57:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:48,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:57:48,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:57:48,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17842545] [2023-12-02 14:57:48,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 14:57:48,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:57:48,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:57:48,762 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:57:48,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 14:57:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:57:48,970 WARN L260 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 107 conjunts are in the unsatisfiable core [2023-12-02 14:57:48,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:57:49,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 14:57:49,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-02 14:57:49,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-12-02 14:57:49,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:57:50,229 INFO L349 Elim1Store]: treesize reduction 353, result has 14.1 percent of original size [2023-12-02 14:57:50,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 212 treesize of output 214 [2023-12-02 14:57:50,385 INFO L349 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2023-12-02 14:57:50,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 184 [2023-12-02 14:57:50,488 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 14:57:50,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 96 treesize of output 157 [2023-12-02 14:57:50,626 INFO L349 Elim1Store]: treesize reduction 95, result has 22.8 percent of original size [2023-12-02 14:57:50,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 124 treesize of output 70 [2023-12-02 14:57:50,872 INFO L349 Elim1Store]: treesize reduction 83, result has 19.4 percent of original size [2023-12-02 14:57:50,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 43 [2023-12-02 14:57:51,126 INFO L349 Elim1Store]: treesize reduction 83, result has 19.4 percent of original size [2023-12-02 14:57:51,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 43 [2023-12-02 14:57:55,970 INFO L349 Elim1Store]: treesize reduction 161, result has 70.2 percent of original size [2023-12-02 14:57:55,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 16 new quantified variables, introduced 91 case distinctions, treesize of input 185 treesize of output 482 [2023-12-02 14:58:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 14:58:26,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:59:01,498 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse19 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (let ((.cse6 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (.cse11 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (.cse16 (* .cse19 4)) (.cse17 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (and (forall ((v_z_7 Int)) (let ((.cse0 (+ .cse19 v_z_7))) (or (< 4294967295 .cse0) (< v_z_7 0) (< .cse0 2147483648) (forall ((v_y_7 Int)) (let ((.cse2 (* v_y_7 4294967296)) (.cse3 (* 4294967295 v_z_7))) (let ((.cse1 (+ .cse2 .cse3))) (or (< .cse1 0) (< c_~ARR_SIZE~0 (+ .cse2 .cse3 1)) (let ((.cse15 (* .cse1 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse18 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_7) (* 17179869184 v_y_7)))) (store .cse17 .cse18 (+ (* |c_ULTIMATE.start_main_~num~0#1| .cse15) (select .cse17 .cse18))))))) (let ((.cse9 (let ((.cse13 (select .cse8 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse14 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16 (* v_z_7 4)))) (store .cse13 .cse14 (+ (select .cse13 .cse14) .cse15))))) (= (let ((.cse5 (select (store .cse8 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse9) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse4 (select .cse5 .cse6))) (* .cse4 .cse4)) |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse7 (select .cse5 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse7 .cse7)))) (+ (let ((.cse10 (select .cse9 .cse11))) (* .cse10 .cse10)) |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse12 (select .cse9 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse12 .cse12)))))))))))))) (forall ((v_z_7 Int)) (or (forall ((v_y_7 Int)) (let ((.cse32 (* v_y_7 4294967296)) (.cse33 (* 4294967295 v_z_7))) (let ((.cse20 (+ .cse32 .cse33))) (or (< .cse20 0) (let ((.cse30 (* .cse20 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse24 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse31 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_7) (* 17179869184 v_y_7)))) (store .cse17 .cse31 (+ (* |c_ULTIMATE.start_main_~num~0#1| .cse30) (select .cse17 .cse31))))))) (let ((.cse25 (let ((.cse28 (select .cse24 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse29 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16 (- 34359738368) (* v_z_7 4)))) (store .cse28 .cse29 (+ (select .cse28 .cse29) .cse30))))) (= (let ((.cse22 (select (store .cse24 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse25) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse21 (select .cse22 .cse6))) (* .cse21 .cse21)) |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse23 (select .cse22 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse23 .cse23)))) (+ (let ((.cse26 (select .cse25 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse26 .cse26)) |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse27 (select .cse25 .cse11))) (* .cse27 .cse27))))))) (< c_~ARR_SIZE~0 (+ .cse32 .cse33 1)))))) (< (+ .cse19 v_z_7) 6442450944) (< 4294967295 v_z_7))) (forall ((v_z_5 Int)) (let ((.cse34 (+ .cse19 v_z_5))) (or (< 6442450943 .cse34) (< 4294967295 v_z_5) (forall ((v_y_5 Int)) (let ((.cse35 (* 4294967295 v_z_5)) (.cse36 (* v_y_5 4294967296))) (let ((.cse55 (+ .cse35 .cse36))) (let ((.cse46 (* .cse55 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse43 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse56 (+ (* 17179869180 v_z_5) (* 17179869184 v_y_5) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse17 .cse56 (+ (select .cse17 .cse56) (* .cse46 |c_ULTIMATE.start_main_~num~0#1|))))))) (let ((.cse44 (select .cse43 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse47 (* v_z_5 4))) (or (< c_~ARR_SIZE~0 (+ .cse35 .cse36 1)) (let ((.cse38 (let ((.cse45 (+ .cse47 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16))) (store .cse44 .cse45 (+ (select .cse44 .cse45) .cse46))))) (= (+ (let ((.cse37 (select .cse38 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse37 .cse37)) (let ((.cse39 (select .cse38 .cse11))) (* .cse39 .cse39)) |c_ULTIMATE.start_main_~sum2~0#1|) (let ((.cse41 (select (store .cse43 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse38) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse40 (select .cse41 .cse6))) (* .cse40 .cse40)) |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse42 (select .cse41 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse42 .cse42)))))) (let ((.cse49 (let ((.cse54 (+ (- 17179869184) .cse47 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16))) (store .cse44 .cse54 (+ (select .cse44 .cse54) .cse46))))) (= (+ (let ((.cse48 (select .cse49 .cse11))) (* .cse48 .cse48)) (let ((.cse50 (select .cse49 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse50 .cse50)) |c_ULTIMATE.start_main_~sum2~0#1|) (let ((.cse52 (select (store .cse43 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse49) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse51 (select .cse52 .cse6))) (* .cse51 .cse51)) (let ((.cse53 (select .cse52 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse53 .cse53)) |c_ULTIMATE.start_main_~sum1~0#1|)))) (< .cse55 0)))))))) (< .cse34 4294967296)))) (forall ((v_z_7 Int)) (or (< (+ .cse19 v_z_7) 6442450944) (forall ((v_y_7 Int)) (let ((.cse69 (* v_y_7 4294967296)) (.cse70 (* 4294967295 v_z_7))) (let ((.cse57 (+ .cse69 .cse70))) (let ((.cse67 (* .cse57 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse61 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse78 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_7) (* 17179869184 v_y_7)))) (store .cse17 .cse78 (+ (* |c_ULTIMATE.start_main_~num~0#1| .cse67) (select .cse17 .cse78))))))) (let ((.cse65 (select .cse61 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse68 (* v_z_7 4))) (or (< .cse57 0) (let ((.cse62 (let ((.cse66 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16 (- 34359738368) .cse68))) (store .cse65 .cse66 (+ (select .cse65 .cse66) .cse67))))) (= (let ((.cse59 (select (store .cse61 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse62) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse58 (select .cse59 .cse6))) (* .cse58 .cse58)) |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse60 (select .cse59 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse60 .cse60)))) (+ (let ((.cse63 (select .cse62 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse63 .cse63)) |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse64 (select .cse62 .cse11))) (* .cse64 .cse64))))) (< c_~ARR_SIZE~0 (+ .cse69 .cse70 1)) (let ((.cse74 (let ((.cse77 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16 .cse68))) (store .cse65 .cse77 (+ (select .cse65 .cse77) .cse67))))) (= (let ((.cse72 (select (store .cse61 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse74) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse71 (select .cse72 .cse6))) (* .cse71 .cse71)) |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse73 (select .cse72 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse73 .cse73)))) (+ (let ((.cse75 (select .cse74 .cse11))) (* .cse75 .cse75)) |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse76 (select .cse74 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse76 .cse76)))))))))))) (< 4294967295 v_z_7))) (forall ((v_z_5 Int)) (or (< 2147483647 (+ .cse19 v_z_5)) (forall ((v_y_5 Int)) (let ((.cse79 (* 4294967295 v_z_5)) (.cse80 (* v_y_5 4294967296))) (let ((.cse99 (+ .cse79 .cse80))) (let ((.cse90 (* .cse99 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse87 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse100 (+ (* 17179869180 v_z_5) (* 17179869184 v_y_5) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse17 .cse100 (+ (select .cse17 .cse100) (* .cse90 |c_ULTIMATE.start_main_~num~0#1|))))))) (let ((.cse88 (select .cse87 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse91 (* v_z_5 4))) (or (< c_~ARR_SIZE~0 (+ .cse79 .cse80 1)) (let ((.cse82 (let ((.cse89 (+ .cse91 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16))) (store .cse88 .cse89 (+ (select .cse88 .cse89) .cse90))))) (= (+ (let ((.cse81 (select .cse82 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse81 .cse81)) (let ((.cse83 (select .cse82 .cse11))) (* .cse83 .cse83)) |c_ULTIMATE.start_main_~sum2~0#1|) (let ((.cse85 (select (store .cse87 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse82) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse84 (select .cse85 .cse6))) (* .cse84 .cse84)) |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse86 (select .cse85 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse86 .cse86)))))) (let ((.cse93 (let ((.cse98 (+ (- 17179869184) .cse91 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16))) (store .cse88 .cse98 (+ (select .cse88 .cse98) .cse90))))) (= (+ (let ((.cse92 (select .cse93 .cse11))) (* .cse92 .cse92)) (let ((.cse94 (select .cse93 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse94 .cse94)) |c_ULTIMATE.start_main_~sum2~0#1|) (let ((.cse96 (select (store .cse87 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse93) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse95 (select .cse96 .cse6))) (* .cse95 .cse95)) (let ((.cse97 (select .cse96 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse97 .cse97)) |c_ULTIMATE.start_main_~sum1~0#1|)))) (< .cse99 0)))))))) (< v_z_5 0))) (forall ((v_z_5 Int)) (or (< 2147483647 (+ .cse19 v_z_5)) (forall ((v_y_5 Int)) (let ((.cse101 (* 4294967295 v_z_5)) (.cse102 (* v_y_5 4294967296))) (let ((.cse114 (+ .cse101 .cse102))) (or (< c_~ARR_SIZE~0 (+ .cse101 .cse102 1)) (let ((.cse112 (* .cse114 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse109 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse113 (+ (* 17179869180 v_z_5) (* 17179869184 v_y_5) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse17 .cse113 (+ (select .cse17 .cse113) (* .cse112 |c_ULTIMATE.start_main_~num~0#1|))))))) (let ((.cse104 (let ((.cse110 (select .cse109 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse111 (+ (* v_z_5 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16))) (store .cse110 .cse111 (+ (select .cse110 .cse111) .cse112))))) (= (+ (let ((.cse103 (select .cse104 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse103 .cse103)) (let ((.cse105 (select .cse104 .cse11))) (* .cse105 .cse105)) |c_ULTIMATE.start_main_~sum2~0#1|) (let ((.cse107 (select (store .cse109 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse104) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse106 (select .cse107 .cse6))) (* .cse106 .cse106)) |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse108 (select .cse107 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse108 .cse108)))))))) (< .cse114 0))))) (< v_z_5 0))) (forall ((v_z_5 Int)) (let ((.cse115 (+ .cse19 v_z_5))) (or (< 6442450943 .cse115) (< 4294967295 v_z_5) (< .cse115 4294967296) (forall ((v_y_5 Int)) (let ((.cse116 (* 4294967295 v_z_5)) (.cse117 (* v_y_5 4294967296))) (let ((.cse129 (+ .cse116 .cse117))) (or (< c_~ARR_SIZE~0 (+ .cse116 .cse117 1)) (let ((.cse127 (* .cse129 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse124 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse128 (+ (* 17179869180 v_z_5) (* 17179869184 v_y_5) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse17 .cse128 (+ (select .cse17 .cse128) (* .cse127 |c_ULTIMATE.start_main_~num~0#1|))))))) (let ((.cse119 (let ((.cse125 (select .cse124 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse126 (+ (- 17179869184) (* v_z_5 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16))) (store .cse125 .cse126 (+ (select .cse125 .cse126) .cse127))))) (= (+ (let ((.cse118 (select .cse119 .cse11))) (* .cse118 .cse118)) (let ((.cse120 (select .cse119 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse120 .cse120)) |c_ULTIMATE.start_main_~sum2~0#1|) (let ((.cse122 (select (store .cse124 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse119) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse121 (select .cse122 .cse6))) (* .cse121 .cse121)) (let ((.cse123 (select .cse122 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse123 .cse123)) |c_ULTIMATE.start_main_~sum1~0#1|)))))) (< .cse129 0)))))))) (forall ((v_z_7 Int)) (let ((.cse130 (+ .cse19 v_z_7))) (or (< 4294967295 .cse130) (< v_z_7 0) (< .cse130 2147483648) (forall ((v_y_7 Int)) (let ((.cse143 (* v_y_7 4294967296)) (.cse144 (* 4294967295 v_z_7))) (let ((.cse131 (+ .cse143 .cse144))) (let ((.cse141 (* .cse131 |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse135 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse152 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_7) (* 17179869184 v_y_7)))) (store .cse17 .cse152 (+ (* |c_ULTIMATE.start_main_~num~0#1| .cse141) (select .cse17 .cse152))))))) (let ((.cse139 (select .cse135 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse142 (* v_z_7 4))) (or (< .cse131 0) (let ((.cse136 (let ((.cse140 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16 (- 34359738368) .cse142))) (store .cse139 .cse140 (+ (select .cse139 .cse140) .cse141))))) (= (let ((.cse133 (select (store .cse135 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse136) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse132 (select .cse133 .cse6))) (* .cse132 .cse132)) |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse134 (select .cse133 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse134 .cse134)))) (+ (let ((.cse137 (select .cse136 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse137 .cse137)) |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse138 (select .cse136 .cse11))) (* .cse138 .cse138))))) (< c_~ARR_SIZE~0 (+ .cse143 .cse144 1)) (let ((.cse148 (let ((.cse151 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse16 .cse142))) (store .cse139 .cse151 (+ (select .cse139 .cse151) .cse141))))) (= (let ((.cse146 (select (store .cse135 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse148) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (let ((.cse145 (select .cse146 .cse6))) (* .cse145 .cse145)) |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse147 (select .cse146 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse147 .cse147)))) (+ (let ((.cse149 (select .cse148 .cse11))) (* .cse149 .cse149)) |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse150 (select .cse148 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse150 .cse150)))))))))))))))))) is different from true [2023-12-02 14:59:01,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874959517] [2023-12-02 14:59:01,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:59:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17842545] [2023-12-02 14:59:01,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17842545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:59:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [378037529] [2023-12-02 14:59:01,507 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 14:59:01,507 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:59:01,508 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:59:01,508 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:59:01,508 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:59:02,047 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-12-02 14:59:02,049 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 8 for LOIs [2023-12-02 14:59:02,051 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:59:19,420 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1730#(and (not (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32766) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~index~0#1|) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0))' at error location [2023-12-02 14:59:19,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:59:19,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:59:19,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2023-12-02 14:59:19,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909614198] [2023-12-02 14:59:19,421 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:59:19,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 14:59:19,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:19,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 14:59:19,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=3120, Unknown=12, NotChecked=114, Total=3540 [2023-12-02 14:59:19,424 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 28 states, 20 states have (on average 1.1) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 14:59:27,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:27,828 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2023-12-02 14:59:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 14:59:27,829 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 20 states have (on average 1.1) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 36 [2023-12-02 14:59:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:27,831 INFO L225 Difference]: With dead ends: 71 [2023-12-02 14:59:27,831 INFO L226 Difference]: Without dead ends: 68 [2023-12-02 14:59:27,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=578, Invalid=5734, Unknown=12, NotChecked=156, Total=6480 [2023-12-02 14:59:27,835 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 72 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:27,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 157 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 14:59:27,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-02 14:59:27,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2023-12-02 14:59:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:59:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2023-12-02 14:59:27,860 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 36 [2023-12-02 14:59:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:27,860 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2023-12-02 14:59:27,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 20 states have (on average 1.1) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 14:59:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2023-12-02 14:59:27,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 14:59:27,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:27,863 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:59:27,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 14:59:28,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:59:28,063 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:59:28,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1523448689, now seen corresponding path program 5 times [2023-12-02 14:59:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:28,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118488356] [2023-12-02 14:59:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:28,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:28,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:59:28,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548387052] [2023-12-02 14:59:28,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:59:28,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:59:28,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:59:28,088 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:59:28,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 14:59:28,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 14:59:28,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:59:28,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:59:28,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:59:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 14:59:28,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:59:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 14:59:28,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:28,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118488356] [2023-12-02 14:59:28,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:59:28,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548387052] [2023-12-02 14:59:28,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548387052] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:59:28,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [592652397] [2023-12-02 14:59:28,669 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 14:59:28,669 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:59:28,669 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:59:28,670 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:59:28,670 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:59:29,462 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-12-02 14:59:29,464 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 53 for LOIs [2023-12-02 14:59:29,491 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:59:31,891 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2213#(and (not (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32766) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~index~0#1|) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0))' at error location [2023-12-02 14:59:31,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:59:31,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:59:31,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-12-02 14:59:31,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758180116] [2023-12-02 14:59:31,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:59:31,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:59:31,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:59:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=631, Unknown=6, NotChecked=0, Total=756 [2023-12-02 14:59:31,894 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-12-02 14:59:32,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:32,624 INFO L93 Difference]: Finished difference Result 94 states and 114 transitions. [2023-12-02 14:59:32,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 14:59:32,625 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 37 [2023-12-02 14:59:32,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:32,626 INFO L225 Difference]: With dead ends: 94 [2023-12-02 14:59:32,626 INFO L226 Difference]: Without dead ends: 91 [2023-12-02 14:59:32,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=179, Invalid=1005, Unknown=6, NotChecked=0, Total=1190 [2023-12-02 14:59:32,628 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 25 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:32,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 110 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:59:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-02 14:59:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2023-12-02 14:59:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 54 states have internal predecessors, (60), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 14:59:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2023-12-02 14:59:32,652 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 37 [2023-12-02 14:59:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:32,652 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2023-12-02 14:59:32,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-12-02 14:59:32,652 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2023-12-02 14:59:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 14:59:32,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:32,654 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:59:32,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 14:59:32,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:59:32,855 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:59:32,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash -732863116, now seen corresponding path program 1 times [2023-12-02 14:59:32,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:32,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668667703] [2023-12-02 14:59:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:32,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:32,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:59:32,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593107491] [2023-12-02 14:59:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:32,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:59:32,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:59:32,878 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:59:32,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 14:59:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:33,684 WARN L260 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-02 14:59:33,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:59:33,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 14:59:33,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-02 14:59:33,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-12-02 14:59:34,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:59:35,001 INFO L349 Elim1Store]: treesize reduction 353, result has 14.1 percent of original size [2023-12-02 14:59:35,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 212 treesize of output 214 [2023-12-02 14:59:35,242 INFO L349 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2023-12-02 14:59:35,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 184 [2023-12-02 14:59:35,359 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 14:59:35,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 96 treesize of output 157 [2023-12-02 14:59:35,546 INFO L349 Elim1Store]: treesize reduction 95, result has 22.8 percent of original size [2023-12-02 14:59:35,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 124 treesize of output 70 [2023-12-02 14:59:35,803 INFO L349 Elim1Store]: treesize reduction 83, result has 19.4 percent of original size [2023-12-02 14:59:35,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 43 [2023-12-02 14:59:37,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:59:39,599 INFO L349 Elim1Store]: treesize reduction 926, result has 15.2 percent of original size [2023-12-02 14:59:39,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 5 disjoint index pairs (out of 120 index pairs), introduced 19 new quantified variables, introduced 110 case distinctions, treesize of input 308 treesize of output 380 [2023-12-02 14:59:40,265 INFO L349 Elim1Store]: treesize reduction 128, result has 35.0 percent of original size [2023-12-02 14:59:40,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 405 treesize of output 406 [2023-12-02 14:59:46,030 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 14:59:46,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 147 treesize of output 198 [2023-12-02 14:59:46,212 INFO L349 Elim1Store]: treesize reduction 84, result has 31.7 percent of original size [2023-12-02 14:59:46,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 175 treesize of output 122 [2023-12-02 14:59:53,198 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:59:53,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 1 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 279 treesize of output 871 [2023-12-02 15:06:49,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2023-12-02 15:06:49,710 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-02 15:06:49,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:06:49,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668667703] [2023-12-02 15:06:49,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:06:49,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593107491] [2023-12-02 15:06:49,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2023-12-02 15:06:49,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [511456131] [2023-12-02 15:06:49,713 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 15:06:49,713 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:06:49,713 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:06:49,713 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:06:49,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:06:49,718 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:332) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:223) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2023-12-02 15:06:49,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:06:49,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2023-12-02 15:06:49,720 ERROR L171 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2023-12-02 15:06:49,720 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-12-02 15:06:49,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:06:49,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 15:06:49,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:49,931 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1] [2023-12-02 15:06:49,934 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:06:49,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:06:49 BoogieIcfgContainer [2023-12-02 15:06:49,952 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:06:49,953 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:06:49,953 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:06:49,953 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:06:49,954 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:57:11" (3/4) ... [2023-12-02 15:06:49,956 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:06:49,957 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:06:49,957 INFO L158 Benchmark]: Toolchain (without parser) took 579448.26ms. Allocated memory was 153.1MB in the beginning and 388.0MB in the end (delta: 234.9MB). Free memory was 113.9MB in the beginning and 247.4MB in the end (delta: -133.5MB). Peak memory consumption was 102.5MB. Max. memory is 16.1GB. [2023-12-02 15:06:49,957 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:06:49,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.47ms. Allocated memory is still 153.1MB. Free memory was 113.9MB in the beginning and 102.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:06:49,958 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.59ms. Allocated memory is still 153.1MB. Free memory was 102.9MB in the beginning and 100.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:06:49,958 INFO L158 Benchmark]: Boogie Preprocessor took 27.12ms. Allocated memory is still 153.1MB. Free memory was 100.8MB in the beginning and 99.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:06:49,959 INFO L158 Benchmark]: RCFGBuilder took 337.30ms. Allocated memory is still 153.1MB. Free memory was 99.8MB in the beginning and 85.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 15:06:49,959 INFO L158 Benchmark]: TraceAbstraction took 578812.25ms. Allocated memory was 153.1MB in the beginning and 388.0MB in the end (delta: 234.9MB). Free memory was 85.1MB in the beginning and 247.4MB in the end (delta: -162.3MB). Peak memory consumption was 75.2MB. Max. memory is 16.1GB. [2023-12-02 15:06:49,959 INFO L158 Benchmark]: Witness Printer took 3.67ms. Allocated memory is still 388.0MB. Free memory is still 247.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:06:49,961 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.47ms. Allocated memory is still 153.1MB. Free memory was 113.9MB in the beginning and 102.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.59ms. Allocated memory is still 153.1MB. Free memory was 102.9MB in the beginning and 100.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.12ms. Allocated memory is still 153.1MB. Free memory was 100.8MB in the beginning and 99.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 337.30ms. Allocated memory is still 153.1MB. Free memory was 99.8MB in the beginning and 85.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 578812.25ms. Allocated memory was 153.1MB in the beginning and 388.0MB in the end (delta: 234.9MB). Free memory was 85.1MB in the beginning and 247.4MB in the end (delta: -162.3MB). Peak memory consumption was 75.2MB. Max. memory is 16.1GB. * Witness Printer took 3.67ms. Allocated memory is still 388.0MB. Free memory is still 247.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 33]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L37] signed long long ARR_SIZE ; [L46] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L47] CALL assume_abort_if_not(ARR_SIZE > 0) [L31] COND TRUE !cond [L47] RET assume_abort_if_not(ARR_SIZE > 0) [L49] int array1[ARR_SIZE] ; [L50] int array2[ARR_SIZE] ; [L51] int count = 0, num = -1 ; [L52] signed long long sum1 = 0, sum2 = 0 ; [L53] int temp ; [L54] short index ; [L56] count=0 [L56] COND TRUE count=0 && index < ARR_SIZE) [L31] COND TRUE !cond [L66] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L68] EXPR array1[index] [L68] array1[index] = array1[index] + num*(num*index) [L69] EXPR array2[ARR_SIZE-1-index] [L69] array2[ARR_SIZE-1-index] = array2[ARR_SIZE-1-index] + (num * index) [L71] temp = __VERIFIER_nondet_int() [L72] COND FALSE !(temp == 0) [L62] COND TRUE 1 [L65] index = __VERIFIER_nondet_short() [L66] CALL assume_abort_if_not(index>=0 && index < ARR_SIZE) [L31] COND TRUE !cond [L66] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L68] EXPR array1[index] [L68] array1[index] = array1[index] + num*(num*index) [L69] EXPR array2[ARR_SIZE-1-index] [L69] array2[ARR_SIZE-1-index] = array2[ARR_SIZE-1-index] + (num * index) [L71] temp = __VERIFIER_nondet_int() [L72] COND TRUE temp == 0 [L75] count=0 [L75] COND TRUE count main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 [2023-12-02 15:06:52,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:06:52,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:06:52,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:06:52,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:06:52,106 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:06:52,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/array-patterns/array3_pattern.c [2023-12-02 15:06:54,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:06:55,087 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:06:55,088 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/sv-benchmarks/c/array-patterns/array3_pattern.c [2023-12-02 15:06:55,095 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/data/7296c2392/425ee71e724541679a3cfcce65e6f7e4/FLAGc3ae3acef [2023-12-02 15:06:55,108 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/data/7296c2392/425ee71e724541679a3cfcce65e6f7e4 [2023-12-02 15:06:55,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:06:55,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:06:55,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:06:55,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:06:55,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:06:55,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0c36a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55, skipping insertion in model container [2023-12-02 15:06:55,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,141 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:06:55,268 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2023-12-02 15:06:55,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:06:55,305 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:06:55,316 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2023-12-02 15:06:55,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:06:55,347 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:06:55,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55 WrapperNode [2023-12-02 15:06:55,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:06:55,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:06:55,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:06:55,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:06:55,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,383 INFO L138 Inliner]: procedures = 19, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2023-12-02 15:06:55,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:06:55,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:06:55,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:06:55,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:06:55,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,396 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,413 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:06:55,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:06:55,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:06:55,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:06:55,419 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (1/1) ... [2023-12-02 15:06:55,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:06:55,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:06:55,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:06:55,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:06:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:06:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:06:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:06:55,487 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:06:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:06:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure square [2023-12-02 15:06:55,487 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2023-12-02 15:06:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:06:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:06:55,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:06:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:06:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:06:55,563 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:06:55,566 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:06:55,871 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:06:55,905 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:06:55,906 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 15:06:55,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:06:55 BoogieIcfgContainer [2023-12-02 15:06:55,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:06:55,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:06:55,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:06:55,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:06:55,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:06:55" (1/3) ... [2023-12-02 15:06:55,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d93818f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:06:55, skipping insertion in model container [2023-12-02 15:06:55,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:06:55" (2/3) ... [2023-12-02 15:06:55,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d93818f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:06:55, skipping insertion in model container [2023-12-02 15:06:55,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:06:55" (3/3) ... [2023-12-02 15:06:55,915 INFO L112 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2023-12-02 15:06:55,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:06:55,931 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:06:55,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:06:55,976 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e41fa82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:06:55,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:06:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:06:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 15:06:55,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:55,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:55,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:55,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:55,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1107785875, now seen corresponding path program 1 times [2023-12-02 15:06:56,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:06:56,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181297418] [2023-12-02 15:06:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:56,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:56,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:06:56,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:06:56,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 15:06:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:56,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:06:56,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:06:56,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:56,118 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:06:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181297418] [2023-12-02 15:06:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181297418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:56,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:06:56,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:06:56,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416344029] [2023-12-02 15:06:56,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:56,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:06:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:06:56,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:06:56,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:06:56,154 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:06:56,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:56,237 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2023-12-02 15:06:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:06:56,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-02 15:06:56,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:56,245 INFO L225 Difference]: With dead ends: 50 [2023-12-02 15:06:56,245 INFO L226 Difference]: Without dead ends: 24 [2023-12-02 15:06:56,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:06:56,250 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:56,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:06:56,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-02 15:06:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-02 15:06:56,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:06:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-12-02 15:06:56,283 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2023-12-02 15:06:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:56,283 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-12-02 15:06:56,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:06:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-12-02 15:06:56,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 15:06:56,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:56,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:56,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:06:56,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:56,488 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:56,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1678682032, now seen corresponding path program 1 times [2023-12-02 15:06:56,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:06:56,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27473879] [2023-12-02 15:06:56,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:56,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:56,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:06:56,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:06:56,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 15:06:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:56,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:06:56,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 15:06:56,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:56,751 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:06:56,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27473879] [2023-12-02 15:06:56,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27473879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:56,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:06:56,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:06:56,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366034295] [2023-12-02 15:06:56,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:56,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:06:56,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:06:56,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:06:56,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:06:56,757 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:06:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:56,885 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-12-02 15:06:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:06:56,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-12-02 15:06:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:56,887 INFO L225 Difference]: With dead ends: 31 [2023-12-02 15:06:56,888 INFO L226 Difference]: Without dead ends: 27 [2023-12-02 15:06:56,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:06:56,890 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:56,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:06:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-02 15:06:56,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-12-02 15:06:56,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:06:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2023-12-02 15:06:56,901 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 21 [2023-12-02 15:06:56,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:56,901 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2023-12-02 15:06:56,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:06:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2023-12-02 15:06:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 15:06:56,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:56,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:56,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 15:06:57,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:57,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:57,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1129513789, now seen corresponding path program 1 times [2023-12-02 15:06:57,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:06:57,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468342352] [2023-12-02 15:06:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:57,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:57,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:06:57,111 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:06:57,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 15:06:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:57,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:06:57,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 15:06:57,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:57,491 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:06:57,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468342352] [2023-12-02 15:06:57,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468342352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:57,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:06:57,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:06:57,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150742343] [2023-12-02 15:06:57,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:57,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:06:57,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:06:57,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:06:57,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:06:57,495 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 15:06:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:58,053 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2023-12-02 15:06:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:06:58,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-12-02 15:06:58,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:58,055 INFO L225 Difference]: With dead ends: 55 [2023-12-02 15:06:58,055 INFO L226 Difference]: Without dead ends: 34 [2023-12-02 15:06:58,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:06:58,057 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:58,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 39 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:06:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-02 15:06:58,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2023-12-02 15:06:58,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:06:58,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-12-02 15:06:58,068 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 30 [2023-12-02 15:06:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:58,068 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-12-02 15:06:58,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 15:06:58,069 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-12-02 15:06:58,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 15:06:58,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:58,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:58,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 15:06:58,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:58,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:58,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:58,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1478081278, now seen corresponding path program 1 times [2023-12-02 15:06:58,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:06:58,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427540272] [2023-12-02 15:06:58,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:58,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:06:58,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:06:58,274 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:06:58,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 15:06:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:58,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 15:06:58,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:58,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 15:06:58,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-02 15:07:00,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:07:00,031 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:07:00,038 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:07:00,132 INFO L349 Elim1Store]: treesize reduction 122, result has 10.9 percent of original size [2023-12-02 15:07:00,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 119 treesize of output 65 [2023-12-02 15:07:15,853 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:07:15,888 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:07:15,909 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:07:15,910 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:07:15,982 INFO L349 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2023-12-02 15:07:15,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 105 treesize of output 43 [2023-12-02 15:08:25,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2023-12-02 15:08:25,992 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-02 15:08:25,993 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:08:25,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427540272] [2023-12-02 15:08:25,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2023-12-02 15:08:25,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [182447740] [2023-12-02 15:08:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:08:25,994 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:08:25,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:08:25,995 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:08:25,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-02 15:08:26,030 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@72fe2be at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.variables.ProgramVarUtils.constructConstantForAuxVar(ProgramVarUtils.java:116) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.computeClosedFormula(UnmodifiableTransFormula.java:135) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:90) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:320) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.decoupleArrayValues(TransFormulaUtils.java:1297) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:387) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 15:08:26,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449561421] [2023-12-02 15:08:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:08:26,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:08:26,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:08:26,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:08:26,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:08:26,065 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@72fe2be at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.variables.ProgramVarUtils.constructConstantForAuxVar(ProgramVarUtils.java:116) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.computeClosedFormula(UnmodifiableTransFormula.java:135) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:90) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:320) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.decoupleArrayValues(TransFormulaUtils.java:1297) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:387) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 15:08:26,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:08:26,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2023-12-02 15:08:26,067 ERROR L171 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2023-12-02 15:08:26,067 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-12-02 15:08:26,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:08:26,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-02 15:08:26,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:08:26,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 15:08:26,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b905d5ab-a68b-458b-96da-f8b991d62bb0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:08:26,677 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-02 15:08:26,680 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:08:26,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:08:26 BoogieIcfgContainer [2023-12-02 15:08:26,693 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:08:26,694 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:08:26,694 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:08:26,694 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:08:26,695 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:06:55" (3/4) ... [2023-12-02 15:08:26,696 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:08:26,697 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:08:26,698 INFO L158 Benchmark]: Toolchain (without parser) took 91585.48ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 83.2MB in the beginning and 49.8MB in the end (delta: 33.4MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2023-12-02 15:08:26,698 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 69.2MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:08:26,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.91ms. Allocated memory is still 107.0MB. Free memory was 83.0MB in the beginning and 71.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:08:26,699 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.89ms. Allocated memory is still 107.0MB. Free memory was 71.5MB in the beginning and 69.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:08:26,699 INFO L158 Benchmark]: Boogie Preprocessor took 32.98ms. Allocated memory is still 107.0MB. Free memory was 69.7MB in the beginning and 68.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:08:26,699 INFO L158 Benchmark]: RCFGBuilder took 488.96ms. Allocated memory is still 107.0MB. Free memory was 68.1MB in the beginning and 78.2MB in the end (delta: -10.1MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2023-12-02 15:08:26,699 INFO L158 Benchmark]: TraceAbstraction took 90784.26ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 77.4MB in the beginning and 49.8MB in the end (delta: 27.5MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. [2023-12-02 15:08:26,700 INFO L158 Benchmark]: Witness Printer took 3.12ms. Allocated memory is still 130.0MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:08:26,701 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 69.2MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.91ms. Allocated memory is still 107.0MB. Free memory was 83.0MB in the beginning and 71.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.89ms. Allocated memory is still 107.0MB. Free memory was 71.5MB in the beginning and 69.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.98ms. Allocated memory is still 107.0MB. Free memory was 69.7MB in the beginning and 68.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 488.96ms. Allocated memory is still 107.0MB. Free memory was 68.1MB in the beginning and 78.2MB in the end (delta: -10.1MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * TraceAbstraction took 90784.26ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 77.4MB in the beginning and 49.8MB in the end (delta: 27.5MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. * Witness Printer took 3.12ms. Allocated memory is still 130.0MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 33]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L37] signed long long ARR_SIZE ; [L46] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L47] CALL assume_abort_if_not(ARR_SIZE > 0) [L31] COND FALSE !(!cond) [L47] RET assume_abort_if_not(ARR_SIZE > 0) [L49] int array1[ARR_SIZE] ; [L50] int array2[ARR_SIZE] ; [L51] int count = 0, num = -1 ; [L52] signed long long sum1 = 0, sum2 = 0 ; [L53] int temp ; [L54] short index ; [L56] count=0 [L56] COND TRUE count=0 && index < ARR_SIZE) [L31] COND FALSE !(!cond) [L66] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L68] EXPR array1[index] [L68] array1[index] = array1[index] + num*(num*index) [L69] EXPR array2[ARR_SIZE-1-index] [L69] array2[ARR_SIZE-1-index] = array2[ARR_SIZE-1-index] + (num * index) [L71] temp = __VERIFIER_nondet_int() [L72] COND TRUE temp == 0 [L75] count=0 [L75] COND TRUE count